Process for manufacturing moving-picture screens.



UNITED sTArnsrnrENT OFFICE.

PATRICK J. HANLON, 0F SEATTLE, WASHINGTON, ASSIGNOR TO SUNLIGI-IT CURTAIN COMPANY, A CORPORATION OF CALIFORNIA.

PROCESS FOR MANUFACTURING MOVING-PICTURE SCREENS.

No Drawing.

Specification of Letters Patent.

Patented Mar. 7, 1911.

T 0 all whom it may concern:

Be it known that I, Pn'rmon J. HANLON, a citizen of the United States, residing at Seattle, in the county of Kings and State of WVashington, have invented a certain new and use Manufacturing Moving-Picture Screens, of which the following is a specification.

This invention has for its object to provide a new and useful compound which is used in treating a fabric to be used as a screen or curtain on which to display pictures produced by a stcreopticon or moving picture machine.- In order to set forth the use of the com ound, theprocess in which it is used will be briefly described.

A cloth or canvas, preferably of a lightcolor and grade is treated with a solution by saturating the some with a spray, after which it is shrunk and stretched. The solution referred to is formed of the following ingredients: p Common pulverized alum 1} ounce Chemically pure pulverized a1u-.

minum pound Common pulverized dry white zinc pounds Water 5.gallons The cloth or canvastreated with the solu-' tion and allowed to dry and shrunk and stretched as liereinbefore set forth is again treated by being saturated with a spray of a solution composed of the following ingredients:

Sandarac gum 1 pound 72 per cent. proof benzin 1 gallon Common pulverized dry :White zinc 2pounds ommou pulverized aluminum 1 pound ul Process Known as a Process for The cloth or canvas is then subforth, a fabric is provided which is impregnated with a compound containing aluminum and havin a silvery-like surface. It has been found 1n practice that moving and other pictures thrown upon a screen or cur tain formed of this fabric are shown with great clearness and the colors of the pictures are brought out with great faithful ness and distinctness, and with much better results than where an ordinary cloth, screen -or curtain is used.

Having described the invention, I claim 1. The process of producing a fabric of the character described which consists in saturating a fabric with. a solution of alum, aluminum, zinc and water, curing the saturated fabric, then shrinking and stretching the same, then saturatingthe fabric with 2% solution of sandurac gmmbenzin, zinc and aluminum, then curing the fabric, and then shrinking and stretching the same, and then ironing the surface thereof.

2. The process of producing a fabric of the character described, which consists in saturating a fabric with a. solution of com-- mon pulverized alum, -1- ounce, chemically pure pulverized aluminum 4 pound, com mon pulverized dry white zinc pounds, water 5 gallons, then curing the fabric and shiinking and stretching the same, then sat-- urating the fabric with a solution of sandarac gum 1 pound, 72 per cent. proof ben- 

